The most centrist Democratic senators may not be around next year

Retiring Montana Sen. Max Baucus testifies on Capitol Hill in Washington, Tuesday, Jan. 28, 2014, before the Senate Foreign Relations Committee hearing on his nomination to become US ambassador to China. Tuesday's hearing by the Senate Foreign Relations Committee was a switch for the six-term Democrat from Montana. As chairman of the Senate Finance Committee, Baucus is used to vetting nominees. On Tuesday he will be answering questions. (AP Photo/Pablo Martinez Monsivais)

5 of the Senate's most centrist Democrats may not be around next year

The Senate's most centrist Democrats may not be around next year.A new ranking of the most liberal and conservative senators found that five of the most moderate Democrats were in seats that have been judged somewhat or very likely to flip to Republicans in this fall's elections.The same was not true of the most centrist Republicans, such as Sens. Susan Collins of Maine, Lisa Murkowski of Alaska and John McCain of Arizona. They either aren't on the ballot this fall …